Sliding contact of a potentiometer is in the middle of the potentiometer wire having resistance $R_p=1 \Omega$ as shown in the figure. An external resistance of $R_e=2 \Omega$ is connected via the sliding contact. The electric current in the circuit is :

Question

Sliding contact of a potentiometer is in the middle of the potentiometer wire having resistance

R_p=1 \Omega

as shown in the figure. An external resistance of

R_e=2 \Omega

is connected via the sliding contact. The electric current in the circuit is :

Quantrex Academy · Accepted Answer

Correct answer: D. 1.0 A

The circuit can be considered as aligned & R_ eq =0.5+(0.5 × 2)/(2+0.5)=((5)/(10)+(10)/(25)) & =(45)/(50)=(9)/(10)=0.9 & i=(0.9)/(0.9)=1 A aligned

Sliding contact of a potentiometer is in the middle of the...